This study investigates the impact of light-absorbing impurities (LAIs) from wildfire ashes on seasonal snow albedo in the Patagonian Andes near San Carlos de Bariloche, Argentina. A multi-faceted approach was applied, integrating satellite remote sensing, and radiative transfer simulations to assess albedo reduction and spectral modifications. The methods employed include calculating percentage variation, visible range slope, normalized indices, and polynomial coefficients to quantify albedo change and impurities’ effects on reflectance. The results show a marked drop in albedo after the November 2, 2022, wildfire, particularly in visible and near infrared bands, reflecting the deposition of ashes and black carbon on the snow surface. The combination of multi-source data and methods underscores the utility of satellite observation to track and quantify the effects of such events on snow-covered regions.